Do you want to help your child build the skills to succeed in life? Our martial arts program can help.
Our martial arts program is designed to help your child develop skills they can use to face challenges with greater confidence and resilience. Over your child’s first 90 days, we’ll introduce them to martial arts, help them develop confidence, focus, and practical life skills, and evaluate their progress. Book a free Child Development & Martial Arts Assessment to meet our team, discuss your goals for your child, and see whether our program is the right fit.
Book Your Free Child Development & Martial Arts Assessment
You'll choose an age-appropriate class and a time that works for your family.
No credit card required. No obligation to enroll.
-
2026 Best Martial Arts School
Market Surveys of America
-
Trusted by 300+ Families
-
2026 Best Martial Arts School
BusinessRate
Frequently Asked Questions
Starting something new comes with questions. Here are the answers parents usually want to know before they book.
-
Every child starts differently. Some jump right in. Others need time to get comfortable, stay focused, or build confidence in a new environment.
Our children's classes are organized around age-appropriate expectations, clear instruction, achievable challenges, and positive coaching. Your child's first visit gives you (and us) a chance to see how they respond before deciding what comes next.
-
We teach martial arts with an emphasis on control, respect, safety, and responsible use of skill. Our instructors create a structured environment where children learn real martial arts while practicing how to listen, follow directions, control their bodies, work with others, and respond appropriately to challenges.
Parents are welcome to stay and watch the class in our comfortable seating areas inside the studio and in the lounge.
-
Sigma instructors are professionally trained to provide clear instruction, set appropriate expectations, coach children through challenges, recognize individual needs, and create an environment that is both welcoming and structured.
Your assessment lets you meet our team and see exactly how we interact with children before making a decision about the program.
-
We'll start by learning a little about your child and what you're hoping martial arts can help them develop.
Then your child will participate in an age-appropriate class, meet our instructors, and experience how we teach.
After class, we'll answer your questions, share what we observed, and explain the next step we believe would be appropriate for your child.
Our goal is to give you enough information and firsthand experience to decide whether Sigma is the right fit for your family.
-
Where: Sigma Martial Arts & Fitness, 28 High Street, Medford, MA 02155.
When to arrive: Please arrive at least 10 minutes before class so we can welcome you, show you around, and complete anything needed before class begins.
What to wear: Comfortable athletic clothing your child can move in. A uniform is not required for the first class.
What to bring: A water bottle is recommended. We'll provide anything else your child needs for the session.
Where to park: We recommend the parking lot between Governors Avenue and Bradlee Road, behind the Islamic Cultural Center. Free one-hour street parking is also available on Bradlee Road, and free two-hour parking is available on the northbound side of Governors Avenue.
Can I watch? Of course! We will reserve a seat for you to stay and watch class.
Ready to see your child in action? Choose your child’s age group, select a class, and reserve your visit.
See What Parents Say About Sigma
-
This is a great place to learn karate for children the instructors have a lot a patience and they are also very professional and still make It fun for kids.
Ana Maria L
-
We have gone to Sigma for years and absolutely love the senseis and programming. My son goes to the after school program and has been having a great time. It’s structured, fun, and teaches kids important skills. Great karate studio for beginners and the experienced clients alike!
Michelle A.
-
This is an awesome martial arts studio. The owner runs a clean operation, and the instruction is top notch. The dojo is well appointed with safety padding on floors and pillars, and has floor to ceiling mirrors to check your form during classes. I hope all aspiring martial arts students and aficionados alike take note of this hidden gem!
Vambah S.
Give Your Child a Chance to Experience Sigma
The easiest way to know whether martial arts is right for your child is to let them experience it. Start with a FREE Child Development & Martial Arts Assessment.